An Gaiser

An Gaiser helps professionals read hidden dynamics, manage resistance, and make sharper decisions when pressure, risk, and silence shape the room.

Request price and availability Request price and availability

The Netherlands

Top rated!

6 Client reviews

Non-binding request for An Gaiser

Call us

+1 347 223 5128 +44 20 3744 5675

An helped me with my graduation project; she was my external supervisor. I followed her training so I could apply it to my photography. She is clear, takes the time for you, and guided me very well through my graduation process. It adds value to your interactions with others and helps you communicate more effectively.

Marieke Zelisse

Photographer

Read all reviews

Book An

Non-binding request for An Gaiser

Call us

+1 347 223 5128 +44 20 3744 5675

Why book An Gaiser for your next event

An brings field-tested behavioral insight from security and investigations into leadership and governance decisions under pressure.
Her keynotes show how avoidance, silence, and misalignment arise in conversations and how to respond without escalating risk.
Audiences gain practical tools to read behavior, adjust in real time, and see how their presence shapes outcomes.

Non-binding request for An Gaiser

Forensic behavioral insight for high-stakes conversations and decisions

An Gaiser is a forensic behavioral expert and investigative interviewer who works at the intersection of risk, behavior, and decision-making. Her expertise lies in conversations where the real issues remain unspoken: silent resistance, avoidance, psychological unsafety, and moments where information disappears instead of emerging. Drawing on experience from national security environments, integrity investigations, and international training assignments, An equips professionals to navigate pressure without rushing to conclusions. Her work is valued for its realism, clarity, and immediate relevance to leadership, compliance, and governance contexts where stakes are high and certainty is rare.

An Gaiser and high-stakes behavioral insight

An Gaiser’s work centers on understanding human behavior when pressure increases and clarity decreases. As a forensic behavioral expert and investigative interviewer, she supports professionals who must make sound decisions while navigating resistance, incomplete information, and subtle shifts in group dynamics. Her approach is grounded in real operational experience rather than theory alone, making her insights practical and directly applicable to complex professional environments.

Earlier in her career, An worked within Dutch government environments, including roles connected to national security and integrity-related investigations. These settings shaped her understanding of how risk emerges in conversations long before it becomes visible on paper. Over time, she specialized in behavioral analysis and interview strategy, focusing on how stress, power, and context influence what people say, avoid, or signal nonverbally.

Field experience across security and governance

An has trained and worked with professionals operating in security, integrity, and investigative domains. Her assignments include work related to counterterrorism interviewing and collaboration with international armed forces. In these environments, mistakes are costly and overconfidence can be dangerous. This experience sharpened her ability to recognize behavioral patterns under pressure and to teach others how to remain observant, calibrated, and professionally self-aware.

She has also delivered training for the National Center for Credibility Assessment (NCCA) in the United States. Her focus areas include nonverbal behavior, interview strategy, and professional self-awareness in high-risk conversations. This combination of behavioral science and operational realism forms the backbone of her speaking and advisory work today.

The GIN Method: a practical framework

Building on her field experience, An developed the GIN Method, a practical framework integrating behavioral analysis, interaction skills, and nonverbal intelligence. The method is designed for environments where checklists fail and fast conclusions increase risk. Instead of promising certainty, it trains professionals to think in scenarios, adjust in real time, and recognize how their own behavior influences what becomes visible in the room.

The GIN Method helps professionals slow down without losing momentum. It sharpens observation, strengthens judgment, and supports better decisions in situations where pressure, hierarchy, or urgency might otherwise narrow perspective.

Translating forensic expertise to leadership

In recent years, An has translated her specialist knowledge from high-risk operational domains to a broader professional audience. She works with leaders, boards, compliance teams, and organizations operating in complex governance contexts. This translation is central to her impact as a keynote speaker: audiences recognize the relevance of her insights even when their daily environment is far removed from security or investigative work.

Her sessions explore how psychological safety erodes, how misalignment develops, and how silence can signal risk. Participants learn to identify these dynamics early and to respond in ways that preserve clarity, authority, and trust.

Key themes in An Gaiser’s keynotes

Reading behavior under pressure and uncertainty
Managing resistance and avoidance in professional conversations
Understanding nonverbal signals and interaction dynamics
Strengthening professional self-awareness in decision-making

These themes are delivered through concrete examples, sharp observation, and practical reflection, making her keynotes engaging and applicable across sectors.

Book An Gaiser for your event

An Gaiser is the author of Verborgen Signalen (Hidden Signals: The Art of Timing and Influence in Conversations). She regularly delivers advisory work, international keynotes, masterclasses, and training programs for organizations facing complex human and organizational risk.

When you book An Gaiser for your event, you bring forensic behavioral insight into leadership and governance conversations where what remains unsaid often matters most.

Customer Reviews

Marieke Zelisse Photographer

After a training with An Gaiser, you suddenly look at your conversation partner or situations in the street very differently, because you begin—consciously or unconsciously—to apply the nonverbal repertoire she teaches. An has an inspiring way of transferring her knowledge about the art of predicting behavior. It is very pleasant to work with someone who is so energetic and positive in life. Her extensive and unique experience is an inspiration to me and to my colleagues as well.

Eric Schouten Founder & CEO of Dyami

If you want to learn more about (non)verbal communication, the dynamics between people in interaction, and how to build rapport with anyone, I recommend working with An Gaiser. She understands like no other how communication—both verbal and nonverbal—works, where your pitfalls lie, where your strengths are, and how to manage them. I experienced An during the INSA trainings as a highly inspiring woman.

Paolo Diana Trainer | mediator | coach

I found the course I took with An extremely educational. I learned a great deal from her, and she delivers the course in a very pleasant way. I would highly recommend it to everyone.

Jeroen van Diemen Owner at Sportles Haarlem

I attended the Nonverbal Profiling training. During the training, you learn to observe the face without immediately drawing conclusions. You are challenged to remain objective and curious. In addition, you learn about your own needs and those of others in communication. During the training, An also adapts to the different needs of the group. All in all, this training teaches you not only to observe others, but also to understand yourself better.

Rens de Bode

I truly enjoy working with An. She is a professional with a sharp eye for human behavior and has a clear, practical way of explaining it. Through her training, I have learned a great deal about how people behave and, more importantly, how to respond to that behavior in a conscious and effective way. Sometimes this means slightly increasing tension, for example in a job interview, and at other times deliberately reducing tension in a challenging conversation. Her expertise is broadly applicable, which makes her extremely valuable to us. An is one of our trusted coaches and supports our employees in their development and in stepping into their roles with greater confidence. She has also trained our HR recruiters, resulting in a much more professional and consistent interview process. For senior or more demanding roles, we involve An in reviewing the final candidates. Our experience is that this leads to better decisions and greater confidence in the final outcome. An is honest, direct, and straightforward, and that is exactly what makes working with her so pleasant. It is a pleasure to collaborate with her, and I continue to be impressed by her professionalism and expertise.

Eddy Thans CEO at Prime Vision | Leading high-tech company in Artificial Intelligence, Robotics and Computer Vision | Financial expert in Strategic Planning, M&A and Tax

Keynotes

Keynote by An Gaiser:

Beyond Body Language: Understanding Nonverbal Signals in Context

Nonverbal behavior is often oversimplified, leading to quick conclusions and false certainty. In high-stakes conversations, this can increase risk rather than reduce it.

In this keynote, An Gaiser reframes nonverbal communication as a contextual skill. Rather than focusing on isolated signals, she shows how behavior must be interpreted in relation to pressure, interaction dynamics, and decision-making context.

Drawing on forensic behavioral analysis and investigative interviewing, this session helps professionals understand what nonverbal behavior is regulating, not what it supposedly “reveals.” Participants gain a sharper lens for observing behavior without jumping to conclusions, and for using those observations to guide better conversations and judgments.

Request a quote

Keynote by An Gaiser:

High-Stakes Conversations: Interviewing and Decision-Making Under Pressure

When the stakes are high, conversations change. Information is withheld, resistance increases, and small misjudgments can have disproportionate consequences.

This keynote explores how to conduct interviews and critical conversations in environments where pressure, risk, and uncertainty are unavoidable. An Gaiser draws on experience from security, integrity, and investigative contexts to explain how interview strategy, behavioral calibration, and self-awareness determine what information becomes accessible.

The focus is not on techniques, but on scenario-based thinking: how to adapt your approach in real time and avoid the traps of tunnel vision and premature conclusions.

Request a quote

Keynote by An Gaiser:

Resistance Is Information: How to Work With Pushback Instead of Against It

Resistance is often treated as a problem to overcome. In reality, it is one of the richest sources of information in a conversation.

In this keynote, An Gaiser reframes resistance as a signal of underlying concerns, risks, or misalignment. She explains why direct persuasion often backfires and how professionals can use behavioral insight and interaction strategy to keep conversations productive without escalation.

Participants learn how to recognize different forms of resistance, how their own behavior can amplify or reduce it, and how to intervene in a way that preserves authority and psychological safety.

Request a quote

Keynote by An Gaiser:

Flooding the Zone: How Cognitive Overload Disrupts Judgment and Dialogue

In complex environments, people are often overwhelmed with information, urgency, and competing narratives. This “flooding of the zone” does not improve decision-making; it paralyses it.

In this keynote, An Gaiser explains how cognitive overload affects behavior, perception, and conversation quality. She explores why more information does not automatically lead to better decisions and how overload can be used, intentionally or unintentionally, to avoid accountability.

Participants gain tools to recognize when conversations are being flooded and how to slow them down, restore clarity, and regain meaningful dialogue.

Request a quote

Keynote by An Gaiser:

Reading Tension in the Boardroom: Intervening Before Decisions Derail

Boardrooms rarely fail because of a lack of intelligence. They fail when tension goes unrecognized or unaddressed.

This keynote focuses on how tension manifests in governance and leadership settings and how it influences decision-making long before conflict becomes visible. An Gaiser shows how subtle behavioral shifts, silence, or over-rationalization can signal growing risk.

Using boardroom-relevant scenarios, she explains how leaders and advisors can intervene constructively, without escalating dynamics or undermining authority, to keep decisions sound and aligned.

Request a quote